<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="https://www.baidu.com/s?" method="get">
  <p>
    <input type="text" name="wd">
    <input type="submit" value="百度一下">
  </p>

</form>

</body>
</html>